TV Ratings: Friday March 4, 2011

Source: MediaWeek, Ratings: in millions
Time Network Show Rating 18-49
8PM CBS The Defenders 8.58 1.5/6
NBC Who Do You Think You Are? 6.13 1.2/4
ABC Supernanny 3.33 0.9/3
CW Smallville 2.24 1.0/3
FOX NAACP Image Awards 2.24 0.6/2
9PM CBS CSI: NY (R) 8.67 1.4/5
NBC Dateline NBC 6.26 1.5/5
ABC Primetime: What Would You Do? 3.47 1.1/4
FOX NAACP Image Awards 2.44 0.6/2
CW Supernatural 2.22 1.0/3
10PM CBS Blue Bloods (R) 8.44 1.4/5
NBC Dateline NBC 7.27 2.7/7
ABC 20/20 4.75 1.2/4

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